How about the recommendation of a previous client?

[Kind of against his will, but it sort of counts.]

I'd show you some examples if I had them with me. Back at home, he was a master at designing clothes for other people. I'm not sure if he ever even took my measurements, and yet everything that he ever gave me fit like a glove. He's done work for men and women, both young and old... heh, he even did a couple costumes for a whole group of us as a surprise one day. Everything fit perfectly.

Plus... not gonna lie, but he knows how to flatter a figure. I'm sure he'd love to work with a girl who knows what she wants.